PB first met WSL in 1982 and started learning from him in Januay 1983. I don't know exactly, but David Peterson startet ca. the same time. But I don't knwo if the two spent much time together. Gary Lam was the older Kung Fu brother of PB and they trained together as far as I know but I'm not sure when GL started learning under WSL guidance.
Btw. PB is 57 years old.

Kai